Journal of the Japan Society of Colour Material
Online ISSN : 1883-2199
Print ISSN : 0010-180X
ISSN-L : 0010-180X
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Volume 50, Issue 5
Displaying 1-4 of 4 articles from this issue
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  • Water Soluble Thermosetting Acrylic Resins for Industrial Paints (I)
    Study on Monomer Composition of Four-Components Copolymer
    Tadanori FUKUDA, Masao TAKAHASHI, Seichiro ONISHI
    1977 Volume 50 Issue 5 Pages 256-261
    Published: May 20, 1977
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.50.256
    JOURNAL FREE ACCESS
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    The monomer mixture containing styrene (St) 19. 2 mole%, butyl acrylate (BA) 56.0 mole%, itaconic acid (IA) 11.0 mole% and β-hydroxyethyl methacrylate (HEMA) 13.8 mole% was copolymerized by means of batch type free radical polymerization system where all the monomers were included in the initial charge. The four-components copolymer compositions in various conversion rate were measured by means of NMR spectra, and compared with the values calculated from Alfrey-Price Q and e scheme using a digital computer.
    (1) The accumulated copolymer composition analyzed by NMR spectra in low conversion rate (33%) was as follows.
    St : BA : IA : HEMA=35 : 37 : 6 : 22 mole%
    St content was about two times higher than the initial content, but BA content was lower.
    (2) St content of the accumulated copolymer decreased continuously, while BA content increased with increase of the conversion rate.
    (3) IA and HEMA contents were very close to the initial contents in all conversion levels. It is a very useful distribution characteristic for the thermosetting coating resin.
    (4) Above results coincided very well with the results calculated from Alfrey-Price Q and e scheme.
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  • Preparative High-Speed Liquid Chromatography for Surfactant Analysis (I)
    Qualitative Analysis of Polyoxyethylene Type Surfactant
    Koichi NAGAMI, Masahiro CHIBA
    1977 Volume 50 Issue 5 Pages 262-266
    Published: May 20, 1977
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.50.262
    JOURNAL FREE ACCESS
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    As the first step of the analysis of surfactant employing preparative high-speed liquid chromatography, the qualitative analysis of the polyoxyethylene type surfactant was investigated.
    The surfactants were chromatographed on a absorption system, using “Merckosorb SI-60 5μ” column (Pyrexglass 10×500 mm) and acetone as eluent.
    Every surfactant was the mixture of oligomers of varying the number of ethylene oxide units. One of the component was identified employing preparative chromatography followed by infrared spectroscopy. The other chromatographic peaks were assigned by assuming that they differed from each other by only one ethylene oxide unit.
    Good correlation was observed between the retention time of the surfactant and it's HLB (Hydrophile-Lipophile Balance).
    The identification of the lipophile group by infrared spectroscopy and the chromatographic determination of HLB permitted the qualitative analysis.
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  • Preparation and Properties of Core-Shell Structure Composite Polymer Latex
    Shinsuke YAMAZAKI
    1977 Volume 50 Issue 5 Pages 267-275
    Published: May 20, 1977
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.50.267
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  • Functional Emulsion
    Yasuharu NAKAYAMA
    1977 Volume 50 Issue 5 Pages 276-284
    Published: May 20, 1977
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.50.276
    JOURNAL FREE ACCESS
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